Nres 102 Final: Sewage or Wastewater Treatment Exam with Complete Solutions

Nres 102 Final: Sewage or Wastewater Treatment Exam with Complete Solutions Nres 102 Final: Sewage or Wastewater Treatment Exam with Complete Solutions Nres 102 Final: Sewage or Wastewater Treatment Exam with Complete Solutions Nres 102 Final: Sewage or Wastewater Treatment Exam with Complete Solutions Whate are the two ways for waste water treatment? - ANSWER--septic tank disposal systems i) for individual household not located in community with central treatment plant - connection to wastewater treatment plants i) from small towns to large cities ii) provide primary, secondary, advanced or tertiary treatment Why do we want to keep storm water and waste water separate? - ANSWER-- In many cities, these were combined, so that when it rains the sewage treatment plants are overwhelmed - there is no need - Western cities mostly have them separated, eastern don't. - Chicago doesn't and built the tunnel system to store waste when the flow is too high. Purpose of sewage treatment - ANSWER-- The main purpose of sewage treatment is to lower the BOD by allowing microbes to break down the waste (decomposition). also... - to convert ammonia to nitrate - remove other chemicals as needed - processes designed to slow water down - let it settle out, then put microbes to work Explain how Sceptic tank onsite disposal works - ANSWER-- A septic tank is a big concrete tank that household waste flows into. - The solids settle out, and the liquid flows out into a drain field. The nutrients are then